Lew Hodgett wrote: > I Wrote: > > >>> --------------------------------- >>> As a sailor and a supplier of industrial level measurement >>> instrumentation, my observation is you are chasing your tail. >>> >>> Unless you are willing to spend $500-$600 for an instrument, you've >>> got a long uphill climb. >>> > -------------------------------- > > "Jim Lynch" wrote: > > >> Wow! I've got about $30 invested in the hardware so far and all >> that's >> left is the software. I plan on adding a liquid level circuit for >> failsafe operation. (another $10) What am I missing? The processor >> runs at about 10 ua while asleep. You paint a very ominous picture. >> > ---------------------------- > The problem is reliable liquid level detection which you haven't > addressed. > > Conductivity, Capacitance, ultrasonic, pulse radar and hydrostatic > technologies that are either not reliable or economically affordable. > > Vibration MIGHT be a possibility, but depends on a continuous source > of power as well as not tolerating the creeping crud often found in a > bilge. > > Given the above, until the level detection problem is solved, little > else matters. > > The most reliable solution to date is to run the pump on a repetitive > cycle such as 10 minutes "On", every 24 hours as prevention. > > OTOH, if you have a leaky boat, it's time to repair it.. > > Don't want to rain on your parade, but first things first. > > Have fun. > > Lew > > I'll not be relying on a single detection system. And I have multiple pumps. This is just a fun project.
Jim. _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://liveaboardonline.com/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
